Educational chart



J. E. McDADE.

EDUCATIONAL CHART.

APPLlcATloN FILEDJUNE12,1919.

orngg Inxfem Patented Dec. 2,1919.

ps (15M f MW VIIAIMIES E. MCDADE, OF CHICAGO, ILLINOIS.

EDUCATIONAL CHART.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application led .Tune 12, 1919. Serial No. 303,647.

' and parallel grooves adapted to receive and hold removable displaycards having letters, words, numerals or other characters printedthereon by means of which words, sentences, problems, and otherexercises may be formed and exhibited to the pupils. My

` invention relates particularly to the construction of the grooves forholding the cardson the chart.

Various attempts have been made to provide means to hold the displaycards on a chart. of the type mentioned including, for example, themethod of bending back and overlapping paper to form grooves, providingpockets by notching and interlocking strips of paper, forming a groovein a strip of non-resilient material and securing the strip to a frame,providing wire clips of various kinds on the chart or by pasting a stripof card board along its lower edge to the body of the chart leaving theupper edge free to form a groove. Such attempts, however, have notbeensuccessful because, in practice, the card holding means, when made ofpaper, soon lose their gripping action, when made of non-resilieiitmaterial the parts soon become worn to such an extent that the displaycards are not firmly held in place and when made of wire clips theconstruction is not only expensive but the clips tend to work loose inthe body of the chart so that with any of the devices of the prior artthe display cards after a relatively short period of use are not heldfirmly in an upright position but incline or tilt forwardly which,obviously, is objectionable in a device 0f this kind.

The principal object of my invention is to provide a chart preferablyhaving a plurality of horizontal and parallel grooves of simple andinexpensive construction for holding the display cards, the groovesbeing constructed so that the front wall of each groove serves to propor hold the display cards up against the body of the chart therebypreventing them from tilting forwardly.

A further obj ect of my invention is to provide grooves having a flatsmooth bottom so that the display cards may be easily alined on thechart.

My invention will be better understood by reference to the accompanyingdrawing illustrating a certain preferred embodiment, wherein- Figure lis a perspective view of a fragmentary port-ion of a chart embodying theprinciples of my invention, and

Figs. 2 and 3 respectively are cross sectional views takeii on lines 2 2and 8 3 of Fig. l.

Like characters of reference designate like parts in the several views.

The chart preferably consists of a plurality of rectangular strips 5, 5,5b, etc., Joined together so as to provide a plurality of horizontalparallel grooves 6, 6a, 6b, etc., in which a number of removable displaycards 7, 7 bearing printed letters, words and numerals may be placed.The parts are preferably made of card board of suitable thicknessalthough any other suitable material might be used. The grooves areidentical in construction and it will suilice to describe in detail theconstruction of the groove 6 formed by the overlapping edges of thestrips 5 and 5a. Each groove is preferably formed by securing the frontside of the upper strip 5 along its lower edge to the back of arelatively narrow strip 8 and the front side of the strip 8 is securedto the back of the adjacent lower strip 5a a short distance below theupper edge y. thereof so that the upper free edge of the strip 5a formsthe front wall and the upper strip forms the back wall of the groove 6.The strips of card board are preferably secured together by means ofpaste or glue. The thickness of the upper edge of the strip 8,preferably, is considerably less than that of the lower edge thereof,the sides of the strip 8 running down on a straight taper. The upperedge g/ of the strip 5a is inclined backwardly toward and nearly touchesthe front side of the upper strip 5 the natural inclination of the upperportion of the strip 5a being to lie in a plane parallel with the frontside of the tapered strip 8 (Fig. 2). The chart may be reinforced bypasting a strip of paper or cloth 10 over the back of the strips 5 and5.

Preferably the display cards 7, 7 are substantially equal in thicknessto that of the upper edge of the strip 8. Vhen-thedisplay cards 7, 7 areplaced in the groove 6, the upper edge of the strip forming the frontwall of the groove is sprung outwardly out of its natural inclinedposition (Fig. 3) with the resultant tendency of the upper edge of thisstrip to crowd and hold the display cards 7, 7 in an upright positionagainst the front side of the adjacent upper strip. The upper edge ofthe strip 8 forms a lat'smooth bottom for the groove 6 so that thedisplay cards may be easily placed in alinement.

The chart may be suspended by a wire or cord 11 from a hook on the wallof a room. I have found that a chart embodying the principles of myinvention will stand considerable use without the upper edges of thestrips .forming the front walls of the grooves losing their resiliency.Vhen the chart is constructed of cardboard the display cards are rmlypropped or held up lagainst the body of the chart in an upright positionand in alinement.

I claim:

l. In an educational chart, the combination of upper and lowerhorizontal strips, the bottom edge of the upper strip overlapping theupper edge of the lower strip, and a relatively narrow strip securedtherebetween, the upper edge of said lower strip extending upwardlybeyond said narrow strip to provide one wall of the groove formedbetween said upper and lower strips,

the upper edge of said narrow strip providing a flat smooth bottom forsaid groove, said groove being adapted to receive` display cards bearingprinted matter 2. In an educational chart, the combinationof upper andlower horizontal strips, the bottom edge of the upper strip overlappingthe upper edge of the lower strip, and a relatively narrow strip securedtherebetween, the upper edge of said lower strip eX- tending upwardlybeyond said narrow strip and inclined toward said upper strip to provideone wall of the groove formed between said upper and lower strips, saidgroovel being adapted to receive display cards bearing printed matter,the upper edge of said lower strip holding said display cardsV up.against said upper strip.

3. In an educational chart, the combination of upper and lowerhorizontal strips, the bottomedge of each or' said strips beingoverlapped bythe upper edge of the adjacent strip therebelow, andrelatively narrow horizontal strips secured between the respectiveoverlapped edges, the upper edge of each of said lower stripsextendingupwardly beyond the respective narrow strips and inclinedtoward the adjacent upper strip thereabove to provide one wall of thegroove formed between said adjacent upper and lower strips, said grooveseach being adapted to receive cards bearing printed matter.

4. In an educational chart, the combination of a plurality of upper andlower horizontal strips, the bottom of each of said strips beingoverlapped by the upper edge of the adjacent strip therebelow, andrelatively narrow strips secured between the respective overlappededges, the upper edge of said lower strips extending upwardly beyond therespective narrow strips to provide one wall of the groove therebyformed between the adjacent upper and lower strips, the upper edge ofeach of said narrow strips providing a flat smooth bottom for thegroove, said grooves being adapted to receiv@J display cards.

JAMES E. McDADE.

